JP4785612B2 - Heat pump water heater - Google Patents

Heat pump water heater Download PDF

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JP4785612B2
JP4785612B2 JP2006133416A JP2006133416A JP4785612B2 JP 4785612 B2 JP4785612 B2 JP 4785612B2 JP 2006133416 A JP2006133416 A JP 2006133416A JP 2006133416 A JP2006133416 A JP 2006133416A JP 4785612 B2 JP4785612 B2 JP 4785612B2
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outdoor unit
hot water
water
water supply
heat exchanger
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JP2007303753A (en
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孝二 太田
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Sharp Corp
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本発明は，冷媒と水との間で熱交換を行う給湯水熱交換器及び前記給湯水熱交換器で加熱された温水を貯留する貯湯タンクを有するヒートポンプ式給湯機に関し，特に，前記給湯水熱交換器が設けられた室外ユニットと前記給湯タンクが設けられた給湯ユニットとを接続する水配管の前記室外ユニットへの接続部の改良に関するものである。   The present invention relates to a hot water supply heat exchanger for exchanging heat between refrigerant and water, and a heat pump type hot water heater having a hot water storage tank for storing hot water heated by the hot water supply heat exchanger, and in particular, the hot water supply. The present invention relates to improvement of a connection portion of a water pipe connecting an outdoor unit provided with a heat exchanger and a hot water supply unit provided with the hot water tank to the outdoor unit.

冷媒と室外空気との間で熱交換を行う室外空気熱交換器と，前記冷媒と水との間で熱交を行う給湯水熱交換器と，前記室外空気熱交換器及び前記給湯水熱交換器を収容する室外ユニット筐体とを有する室外ユニットを備えるヒートポンプ式給湯機がある。また，前記給湯水熱交換器により加熱された後の温水は，前記室外ユニットに接続された水配管を経て，室内に設けられた給湯ユニット内の貯湯タンクに貯留される。ここで，前記室外ユニットと前記水配管との接続部は，前記室外ユニット筐体の背面や側面に突出して設けられる（例えば，特許文献１参照）。
また，長時間使用しない場合などに前記水配管内の水の凍結を防止するために，該水配管内の水を抜き取るための水抜栓を有するヒートポンプ式給湯機がある（例えば，特許文献２，３参照）。前記特許文献２，３に示されているように，前記水抜栓は，前記室外ユニットと前記水配管との接続部と同様に，前記室外ユニット筐体の背面や側面に突出して設けられる。
特開２００３−１８５２５０号公報 特開２００４−２８６２６１号公報 特開２００５−１４７６２０号公報 An outdoor air heat exchanger that exchanges heat between the refrigerant and outdoor air, a hot water supply heat exchanger that exchanges heat between the refrigerant and water, the outdoor air heat exchanger, and the hot water supply heat exchange There is a heat pump type hot water heater provided with an outdoor unit having an outdoor unit housing for accommodating a vessel. The hot water heated by the hot water supply heat exchanger is stored in a hot water storage tank in a hot water supply unit provided indoors through a water pipe connected to the outdoor unit. Here, the connection portion between the outdoor unit and the water pipe is provided to protrude from the back surface or the side surface of the outdoor unit housing (see, for example, Patent Document 1).
Further, there is a heat pump type water heater having a water drain plug for draining water in the water pipe in order to prevent freezing of the water in the water pipe when not used for a long time (for example, Patent Document 2, Patent Document 2). 3). As shown in Patent Documents 2 and 3, the water drain plug is provided so as to protrude from the back surface and the side surface of the outdoor unit housing, similarly to the connection portion between the outdoor unit and the water pipe.
JP 2003-185250 A JP 2004-286261 A JP 2005-147620 A

しかしながら，前記特許文献１〜３のように，前記室外ユニットと前記水配管との接続部や前記水抜栓が前記室外ユニット筐体の背面や側面から突出して設けられている場合には，その突出した部分のために装置サイズが拡大することになり，また，前記室外ユニットの外観の見栄えが悪いという問題点があった。
従って，本発明は上記事情に鑑みてなされたものであり，その目的とするところは，ヒートポンプ式給湯機の装置サイズの小型化及び外観の見栄えを向上させることにある。 However, as described in Patent Documents 1 to 3, when the connection portion between the outdoor unit and the water pipe or the water drain plug is provided so as to protrude from the back or side surface of the outdoor unit housing, the protrusion As a result, the size of the apparatus is increased, and the appearance of the outdoor unit is poor.
Accordingly, the present invention has been made in view of the above circumstances, and its object is to reduce the size of the heat pump water heater and improve the appearance of the appearance.

上記目的を達成するために本発明は，冷媒と室外空気との間で熱交換を行う室外空気熱交換器と，前記冷媒と水との間で熱交換を行う給湯水熱交換器と，少なくとも前記室外空気熱交換器及び前記給湯水熱交換器を収容する室外ユニット筐体とを有する室外ユニットと，前記室外ユニットの前記給湯水熱交換器において加熱された水を貯留する貯湯タンクを少なくとも有する給湯ユニットと，前記室外ユニット及び前記給湯ユニットに接続され，前記給湯水熱交換器及び前記貯湯タンクの間に水を流通させる水配管と，を備えてなるヒートポンプ式給湯機に適用されるものであって，前記室外ユニット筐体の背面及び側面で形成された角部の下端に，前記室外ユニットの内部に向けて陥没する陥没部を設けておき，前記室外ユニットと前記水配管とを接続する二つの接続部を，前記陥没部内に収まり該陥没部内における前記室外ユニット筐体の背面と平行な面に上下方向に並べて設けることを特徴とするヒートポンプ式給湯機として構成される。具体的に，前記陥没部は，前記室外ユニット筐体の背面及び側面で形成された角部の下端に設けることが考えられる。
これにより，前記接続部が，前記室外ユニット筐体から突出しないため，装置サイズを小型化すると共に外観の見栄えを向上させることができる。さらに，前記接続部が前記室外ユニット筐体側に陥没しているため，前記接続部にエルボ（Ｌ字型配管）を用いる必要がなく，コスト削減を図ることができる。
また，前記水配管から水を抜き取るための水抜栓を備える構成では，該水抜栓も前記接続部と同様に，前記室外ユニット筐体から突出しないように前記陥没部内における前記室外ユニット筐体の背面と平行な面の前記接続部の下方に設けることが望ましい。 In order to achieve the above object, the present invention includes an outdoor air heat exchanger that exchanges heat between refrigerant and outdoor air, a hot water supply heat exchanger that exchanges heat between the refrigerant and water, and at least An outdoor unit having the outdoor air heat exchanger and an outdoor unit housing for housing the hot water hot water exchanger, and at least a hot water storage tank for storing water heated in the hot water hot water exchanger of the outdoor unit The present invention is applied to a heat pump type hot water heater comprising a hot water supply unit, and a water pipe connected to the outdoor unit and the hot water supply unit, and for circulating water between the hot water supply heat exchanger and the hot water storage tank. there are, on the back and lower corners formed by the side surface of the outdoor unit housing, may be provided a recess for recessed toward the inside of the outdoor unit, the water and the outdoor unit Composed of two connecting portions, as a heat pump water heater, characterized in that provided side by side in the vertical direction on the back parallel to the surface of the outdoor unit housing in該陥deaths portion fits to the recessed portion for connecting the tube . Specifically, it is conceivable that the depressed portion is provided at a lower end of a corner portion formed on the back and side surfaces of the outdoor unit casing.
Thereby, since the said connection part does not protrude from the said outdoor unit housing | casing, an apparatus can be reduced in size and the external appearance can be improved. Further, since the connecting portion is depressed on the outdoor unit housing side, it is not necessary to use an elbow (L-shaped pipe) for the connecting portion, and the cost can be reduced.
In the configuration with a drain tap for extracting water from the water pipe, the drain tap is also similarly to the connecting portion, of the outdoor unit housing for definitive in the recessed portion so as not to protrude from the outdoor unit housing It is desirable to provide it below the connection part in a plane parallel to the back surface .

さらに，前記陥没部内における前記室外ユニット筐体の側面又は底面と平行な面に，前記室外ユニットの内部に連通する連通口を設けておけば，該室外ユニットの内部に設けられた例えば電子部品などの冷却作用を期待することができ，長寿命化を図ることができる。
また，前記陥没部内における前記室外ユニット筐体の底面と平行な面に，外部から前記室外ユニット内に配線を挿入するための配線挿入口を設けてもかまわない。これにより，前記配線挿入口を別途設ける場合に比べて該配線挿入口のカバー部材などの構成要素を削減することができる。
ところで，前記室外ユニットには，該室外ユニット内で結露した水を所定の排水口から排水するためのドレンパンが設けられるが，前記陥没部でも結露が発生するおそれがある。そこで，前記陥没部内の水を前記ドレンパンに導く排水手段を設けておくことが望ましい。これにより，前記ドレンパンを兼用して前記陥没部内の水を前記所定の排水口から排水することができる。 Further, if a communication port communicating with the inside of the outdoor unit is provided in a surface parallel to the side surface or the bottom surface of the outdoor unit housing in the depressed portion , for example, an electronic component provided inside the outdoor unit The cooling action such as can be expected, and the life can be extended.
In addition, a wire insertion port for inserting a wire into the outdoor unit from the outside may be provided on a surface parallel to the bottom surface of the outdoor unit housing in the depressed portion. Thereby, components such as a cover member of the wiring insertion port can be reduced as compared with the case where the wiring insertion port is provided separately.
By the way, the outdoor unit is provided with a drain pan for draining the water condensed in the outdoor unit from a predetermined drain, but there is a possibility that dew condensation may occur even in the depressed portion. Therefore, it is desirable to provide a drainage means for guiding the water in the depressed portion to the drain pan. Thereby, the water in the depressed portion can be drained from the predetermined drainage port also using the drain pan.

本発明によれば，前記接続部が，前記室外ユニット筐体から突出しないため，該接続部が突出して設けられていた従来装置に比べて装置サイズを小型化すると共に外観の見栄えを向上させることができる。また，前記接続部が前記室外ユニット筐体側に陥没しているため，前記接続部にエルボ（Ｌ字型配管）を用いる必要がなく，コスト削減を図ることができる。
さらに，前記水配管から水を抜き取るための水抜栓も，前記接続部と同様に，前記室外ユニット筐体から突出しないように前記陥没部内に設ければ，該水抜栓が突出して設けられていた従来装置に比べて装置サイズを小型化すると共に外観の見栄えを向上させることができる。 According to the present invention, since the connecting portion does not protrude from the outdoor unit housing, the size of the device can be reduced and the appearance of the appearance can be improved as compared with the conventional device in which the connecting portion protrudes. Can do. In addition, since the connecting portion is depressed on the outdoor unit housing side, it is not necessary to use an elbow (L-shaped pipe) for the connecting portion, and the cost can be reduced.
Furthermore, if the water drain plug for draining water from the water pipe is also provided in the depressed portion so as not to protrude from the outdoor unit housing, the water drain plug is provided to protrude. Compared with the conventional device, the device size can be reduced and the appearance of the device can be improved.

以下添付図面を参照しながら，本発明の実施の形態について説明し，本発明の理解に供する。尚，以下の実施の形態は，本発明を具体化した一例であって，本発明の技術的範囲を限定する性格のものではない。
ここに，図１は本発明の実施の形態に係るヒートポンプ式給湯機Ｘの概略構成を示すブロック図，図２は前記ヒートポンプ式給湯機Ｘが有する室外ユニット１を背面側から見た斜視図，図３は前記室外ユニット１に設けられた陥没部４の拡大図である。
まず，図１を用いて，本発明の実施の形態に係るヒートポンプ式給湯機Ｘの概略構成について説明する。
図１に示すように，前記ヒートポンプ式給湯機Ｘは，大別すると室外に設けられる室外ユニット１及び室内に設けられる給湯ユニット２を備えて構成されており，該室外ユニット１及び該給湯ユニット２は，該室外ユニット１及び該給湯ユニット２の間に水を流通させるための水配管３で接続されている。前記ヒートポンプ式給湯機Ｘでは，給水口４から供給された水が所定の温度まで加熱された後，給湯口５から給湯される。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of a heat pump type hot water heater X according to an embodiment of the present invention. FIG. 2 is a perspective view of an outdoor unit 1 of the heat pump type hot water heater X as seen from the back side. FIG. 3 is an enlarged view of the depressed portion 4 provided in the outdoor unit 1.
First, the schematic configuration of the heat pump type hot water heater X according to the embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, the heat pump type hot water heater X is roughly configured to include an outdoor unit 1 provided outside and a hot water supply unit 2 provided indoors, and the outdoor unit 1 and the hot water unit 2 are provided. Are connected by a water pipe 3 for circulating water between the outdoor unit 1 and the hot water supply unit 2. In the heat pump type water heater X, the water supplied from the water supply port 4 is heated to a predetermined temperature and then supplied from the hot water supply port 5.

前記室外ユニット１は，冷媒を圧縮する圧縮機１１と，前記圧縮機１１により圧縮された高温高圧の冷媒と水との間で熱交換を行うことにより該水を加熱する給湯水熱交換器１２と，前記給湯水熱交換器１２において水と熱交換された後の冷媒を膨張させる膨張器１３と，前記膨張器１３で膨張された低温低圧の冷媒と室外空気との間で熱交換を行うことにより該冷媒を冷却する室外空気熱交換器１４と，前記室外空気熱交換器１４に室外空気を送風するための送風ファン１４ａと，前記水配管３を接続するための接続部１５と，前記給湯水熱交換器１２や前記水配管３内の水を抜き取るための水抜栓１６とを備えて概略構成されている。   The outdoor unit 1 includes a compressor 11 that compresses a refrigerant, and a hot water supply water heat exchanger 12 that heats the water by exchanging heat between the high-temperature and high-pressure refrigerant compressed by the compressor 11 and water. And an expander 13 that expands the refrigerant after heat exchange with water in the hot water supply heat exchanger 12, and heat exchange between the low-temperature and low-pressure refrigerant expanded in the expander 13 and outdoor air. An outdoor air heat exchanger 14 for cooling the refrigerant, a blower fan 14a for blowing outdoor air to the outdoor air heat exchanger 14, a connection portion 15 for connecting the water pipe 3, A hot water supply heat exchanger 12 and a water drain plug 16 for draining water in the water pipe 3 are schematically configured.

一方，前記給湯ユニット２は，前記室外ユニット１の前記給湯水熱交換器１２において冷媒との間の熱交換により加熱され，前記水配管３を経て流入する温水を貯留する貯湯タンク２１と，前記水配管３に水を循環させるための循環ポンプ２２と，前記貯湯タンク２１に貯留された温水と前記給水口４から供給される水とを所定の割合で混合する混合弁２３と，前記水配管３が接続される接続部２４と，を備えて概略構成されている。なお，図示しないが，前記室外ユニット１や前記給湯ユニット２には，前記各構成要素を制御する制御回路などが設けられている。例えば，前記ヒートポンプ式給湯機Ｘでは，前記制御回路（不図示）により前記給水口４からの給水量や前記給湯口５からの給湯量，前記混合弁２３における混合比率などが制御される。   On the other hand, the hot water supply unit 2 is heated by heat exchange with the refrigerant in the hot water supply water heat exchanger 12 of the outdoor unit 1, and stores a hot water storage tank 21 for storing hot water flowing in through the water pipe 3, A circulation pump 22 for circulating water through the water pipe 3, a mixing valve 23 for mixing hot water stored in the hot water storage tank 21 and water supplied from the water supply port 4 at a predetermined ratio, and the water pipe And a connection portion 24 to which 3 is connected. Although not shown, the outdoor unit 1 and the hot water supply unit 2 are provided with a control circuit for controlling the respective components. For example, in the heat pump type water heater X, the amount of water supplied from the water supply port 4, the amount of hot water supplied from the hot water supply port 5, the mixing ratio in the mixing valve 23, and the like are controlled by the control circuit (not shown).

次に，図２を用いて，前記室外ユニット１の外観構成について説明する。
前記室外ユニット１は，前記圧縮機１１，前記給湯水熱交換器１２，前記膨張器１３，前記室外空気熱交換器１４及び前記送風ファン１４ａを収容する室外ユニット筐体１０を備えている。
また，図２に示すように，前記室外ユニット筐体１０には，前記室外ユニット１内で結露した水などを外部に排水する排水口１７と，前記室外ユニット１の内部に向けて陥没する陥没部１８とが設けられている。
前記排水口１７は，前記室外ユニット１の底面（基盤）に形成された溝により導かれた水を外部に排水するものである。この場合，前記底面がドレンパンに相当する。もちろん，前記底面とは別途構成されたドレンパンを有する構成であってもかまわない。
前記陥没部１８は，前記室外ユニット筐体１０の背面１０ａ及び側面１０ｂで形成された角部の下端に設けられている。従来，前記接続部１５及び前記水抜栓１６は，前記室外ユニット筐体１０から突出して設けられていたが，当該室外ユニット１では，前記接続部１５及び前記水抜栓１６が，前記陥没部１８内に設けられている（図３参照）。 Next, the external configuration of the outdoor unit 1 will be described with reference to FIG.
The outdoor unit 1 includes an outdoor unit housing 10 that houses the compressor 11, the hot water supply heat exchanger 12, the expander 13, the outdoor air heat exchanger 14, and the blower fan 14a.
As shown in FIG. 2, the outdoor unit housing 10 has a drain port 17 for draining water condensed in the outdoor unit 1 to the outside, and a depression that sinks toward the inside of the outdoor unit 1. A portion 18 is provided.
The drain port 17 drains water guided by a groove formed on the bottom surface (base) of the outdoor unit 1 to the outside. In this case, the bottom surface corresponds to a drain pan. Of course, a configuration having a drain pan configured separately from the bottom surface may be used.
The depressed portion 18 is provided at the lower end of the corner portion formed by the back surface 10 a and the side surface 10 b of the outdoor unit housing 10. Conventionally, the connection portion 15 and the water drain plug 16 are provided so as to protrude from the outdoor unit housing 10. However, in the outdoor unit 1, the connection portion 15 and the water drain plug 16 are disposed in the recessed portion 18. (See FIG. 3).

以下，図３を用いて，前記室外ユニット筐体１０に設けられた前記陥没部１８について説明する。
図３に示すように，前記陥没部１８内には，上下に平行に並ぶ前記接続部１５と，前記接続部１５の下方に左右に平行に並ぶ前記水抜栓１６とが設けられている。なお，本実施の形態では，図３に示すように，前記配線接続部１５や前記水抜栓１６が，前記室外ユニット筐体１０の陥没部１８において前記背面１０ａと平行な面に配設されているが，これに限られず，例えば前記側面１０ｂと平行な面に配設してもかまわない。
このように，前記室外ユニット１では，前記接続部１５及び前記水抜栓１６が，前記陥没部１８内に収まっているため，該室外ユニット１の装置サイズの小型化を図ることができ，また，前記室外ユニット１の外観の見栄えを向上させることができる。さらに，従来装置（例えば特許文献１〜３参照）のように前記接続部１５が前記室外ユニット筐体１０から突出する構成では，該配線接続部１５にエルボを用いることで据付スペースの省減が図られていたが，当該室外ユニット１では，前記接続部１５が前記陥没部１８内に設けられているため，前記接続部１５にエルボを用いる必要がなく，該接続部１５の構成を簡素化することでコストを削減することが可能である。 Hereinafter, the depressed portion 18 provided in the outdoor unit housing 10 will be described with reference to FIG.
As shown in FIG. 3, the recessed portion 18 is provided with the connecting portion 15 arranged in parallel in the vertical direction and the drain plug 16 arranged in parallel in the left and right below the connecting portion 15. In the present embodiment, as shown in FIG. 3, the wiring connection portion 15 and the water drain plug 16 are disposed on a surface parallel to the back surface 10 a in the recessed portion 18 of the outdoor unit housing 10. However, the present invention is not limited to this. For example, it may be disposed on a surface parallel to the side surface 10b.
Thus, in the outdoor unit 1, since the connecting portion 15 and the water drain plug 16 are accommodated in the recessed portion 18, the apparatus size of the outdoor unit 1 can be reduced, The appearance of the outdoor unit 1 can be improved. Further, in the configuration in which the connection portion 15 protrudes from the outdoor unit housing 10 as in the conventional device (for example, see Patent Documents 1 to 3), the installation space can be reduced by using an elbow for the wiring connection portion 15. As shown in the figure, in the outdoor unit 1, since the connecting portion 15 is provided in the depressed portion 18, it is not necessary to use an elbow for the connecting portion 15, and the configuration of the connecting portion 15 is simplified. By doing so, it is possible to reduce the cost.

また，図３に示すように，前記陥没部１８には，前記室外ユニット１の内部に連通する連通口３１と，前記室外ユニット１内に配線を挿入するための配線挿入口３２とが設けられている。
このように，前記室外ユニット１の内部に連通する連通口３１を設けることにより，該室外ユニット１内に外気を取り入れることや該室外ユニット１内の空気を排気することが可能となるため，該室外ユニット１の内部に収容された例えば前記制御回路（不図示）などの電子部品の冷却作用が期待され，当該室外ユニット１の長寿命化を図ることができる。しかも，前記陥没部１８が，前記室外ユニット筐体１０の下端に前記室外ユニット１の内部に向けて陥没するように設けられているため，該陥没部１８内に雨水などが浸入するおそれも少ない。また，前記連通口３１に網目のフィルタ等を設けて，前記連通口３１からの虫などの侵入を防止することが望ましい。
また，従来（例えば特許文献１参照），前記室外ユニット内へ配線を挿入するための開口部には，該開口部を開閉するための蓋部材が設けられているが，前記室外ユニット１では，前記配線挿入口３２が前記陥没部１８内に設けられているため，前記蓋部材を設ける必要がなく，構成を簡素化すると共に，外観の見栄えを向上することができる。
なお，前記室外ユニット筐体１０は，前記陥没部１８が開放されている構成であるが，前記陥没部１８を覆うカバー部材を設ける構成も他の実施例として考えられる。 As shown in FIG. 3, the depression 18 is provided with a communication port 31 communicating with the inside of the outdoor unit 1 and a wiring insertion port 32 for inserting a wire into the outdoor unit 1. ing.
As described above, by providing the communication port 31 communicating with the inside of the outdoor unit 1, it becomes possible to take outside air into the outdoor unit 1 and exhaust air inside the outdoor unit 1. Cooling action of electronic components such as the control circuit (not shown) accommodated in the outdoor unit 1 is expected, and the life of the outdoor unit 1 can be extended. Moreover, since the depressed portion 18 is provided at the lower end of the outdoor unit housing 10 so as to be depressed toward the inside of the outdoor unit 1, there is little possibility that rainwater or the like enters the depressed portion 18. . In addition, it is desirable to provide a mesh filter or the like at the communication port 31 to prevent intrusion of insects or the like from the communication port 31.
Conventionally (see, for example, Patent Document 1), an opening for inserting a wiring into the outdoor unit is provided with a lid member for opening and closing the opening. In the outdoor unit 1, Since the wiring insertion port 32 is provided in the depressed portion 18, it is not necessary to provide the lid member, and the configuration can be simplified and the appearance of the appearance can be improved.
In addition, although the said outdoor unit housing | casing 10 is the structure by which the said depression part 18 is open | released, the structure which provides the cover member which covers the said depression part 18 is also considered as another Example.

ここに，図４は前記室外ユニット１の変形例である室外ユニット１０１を説明するための図である。なお，前記室外ユニット１（図１〜３）と同様の構成要素には同じ符号を付してその説明を省略する。
前記実施の形態で説明した前記室外ユニット１（図３参照）では，前記陥没部１８の底面が開放されているため，前記陥没部１８で結露により生じた水が該陥没部１８から滴り落ちることになる。即ち，前記室外ユニット１では，前記排水口１７及び前記陥没部１８の２ヶ所から水が排水されることになる。そのため，前記排水口１７及び前記陥没部１８の２ヶ所から排水される水を所定の位置に導くには別々の配管が必要になる。 FIG. 4 is a view for explaining an outdoor unit 101 which is a modification of the outdoor unit 1. In addition, the same code | symbol is attached | subjected to the component similar to the said outdoor unit 1 (FIGS. 1-3), and the description is abbreviate | omitted.
In the outdoor unit 1 (see FIG. 3) described in the embodiment, since the bottom surface of the depressed portion 18 is open, water generated by condensation in the depressed portion 18 drops from the depressed portion 18. become. That is, in the outdoor unit 1, water is drained from the two locations of the drain port 17 and the depressed portion 18. Therefore, separate pipes are required to guide the water drained from the two locations of the drain port 17 and the depressed portion 18 to a predetermined position.

しかし，図４に示すように，本実施例に係る前記室外ユニット１０１では，該室外ユニット１０１の底面１０１ａ（基盤）が，前記陥没部１８の底部まで延設されている。そして，前記底面１０１ａには，前記陥没部１８で結露した水などを，前記排水口１７に続く前記ドレンパン（不図示）に導く溝１０１ｂ（排水手段の一例）が形成されている。即ち，前記室外ユニット１０１では，前記室外ユニット１内の水を排水する排水口１７が，前記陥没部１８内の水を排水する排水口として兼用される。
このように構成された前記室外ユニット１０１では，前記陥没部１８内の水が前記溝１０１ｂによって前記排水口１７から排水されるため，一の配管だけで前記室外ユニット１内部及び前記陥没部１８で結露により生じた水や前記水抜栓１６から排水される水を所定の位置に導くことが可能であり，配管数を削減することができる。 However, as shown in FIG. 4, in the outdoor unit 101 according to the present embodiment, the bottom surface 101 a (base) of the outdoor unit 101 extends to the bottom of the depressed portion 18. The bottom surface 101a is formed with a groove 101b (an example of a drainage unit) that guides water condensed in the depressed portion 18 to the drain pan (not shown) following the drain port 17. That is, in the outdoor unit 101, the drain port 17 that drains the water in the outdoor unit 1 is also used as the drain port that drains the water in the depressed portion 18.
In the outdoor unit 101 configured as described above, the water in the depressed portion 18 is drained from the drain port 17 by the groove 101b, so that the inside of the outdoor unit 1 and the depressed portion 18 can be formed with only one pipe. It is possible to guide water generated by condensation or water drained from the water drain plug 16 to a predetermined position, and the number of pipes can be reduced.

本発明の実施の形態に係るヒートポンプ式給湯機の概略構成を示すブロック図。The block diagram which shows schematic structure of the heat pump type water heater which concerns on embodiment of this invention. 本発明の実施の形態に係るヒートポンプ式給湯機が有する室外ユニットを背面側から見た斜視図。The perspective view which looked at the outdoor unit which the heat pump type water heater which concerns on embodiment of this invention has from the back side. 本発明の実施の形態に係るヒートポンプ式給湯機が有する室外ユニットに設けられた陥没部の拡大図。The enlarged view of the depression part provided in the outdoor unit which the heat pump type water heater which concerns on embodiment of this invention has. 室外ユニットの変形例を説明するための図。The figure for demonstrating the modification of an outdoor unit.

符号の説明Explanation of symbols

１…室外ユニット
２…給湯ユニット
３…水配管
４…給水口
５…給湯口
１１…圧縮機
１２…給湯水熱交換器
１３…膨張器
１４…室外空気熱交換器
１５，２４…接続部
１６…水抜栓
１７…排水口
１８…陥没部
２１…貯湯タンク
２２…循環ポンプ
２３…混合弁 DESCRIPTION OF SYMBOLS 1 ... Outdoor unit 2 ... Hot water supply unit 3 ... Water piping 4 ... Water supply port 5 ... Hot water supply port 11 ... Compressor 12 ... Hot water supply water heat exchanger 13 ... Expander 14 ... Outdoor air heat exchangers 15, 24 ... Connection part 16 ... Drain plug 17 ... Drain port 18 ... Depression 21 ... Hot water storage tank 22 ... Circulation pump 23 ... Mixing valve

Claims (4)

冷媒と室外空気との間で熱交換を行う室外空気熱交換器と，前記冷媒と水との間で熱交換を行う給湯水熱交換器と，少なくとも前記室外空気熱交換器及び前記給湯水熱交換器を収容する室外ユニット筐体とを有する室外ユニットと，
前記室外ユニットの前記給湯水熱交換器において加熱された水を貯留する貯湯タンクを少なくとも有する給湯ユニットと，
前記室外ユニット及び前記給湯ユニットに接続され，前記給湯水熱交換器及び前記貯湯タンクの間に水を流通させる水配管と，
を備えてなるヒートポンプ式給湯機であって，
前記室外ユニット筐体の背面及び一側面で形成された一つの角部の下端に，前記室外ユニットの内部に向けて陥没する陥没部が設けられてなり，
前記室外ユニットと前記水配管とを接続する二つの接続部が，前記陥没部内に収まり該陥没部内における前記室外ユニット筐体の背面と平行な面に上下方向に並べて設けられてなり，
前記水配管から水を抜き取るための水抜栓が，前記室外ユニットの前記陥没部内における前記室外ユニット筐体の背面と平行な面の前記接続部の下方に設けられてなることを特徴とするヒートポンプ式給湯機。 An outdoor air heat exchanger that exchanges heat between the refrigerant and outdoor air, a hot water supply heat exchanger that exchanges heat between the refrigerant and water, and at least the outdoor air heat exchanger and the hot water supply heat An outdoor unit having an outdoor unit housing for accommodating the exchanger;
A hot water supply unit having at least a hot water storage tank for storing water heated in the hot water supply heat exchanger of the outdoor unit;
A water pipe connected to the outdoor unit and the hot water supply unit, and for circulating water between the hot water supply water heat exchanger and the hot water storage tank;
A heat pump type water heater comprising:
At the lower end of one corner formed on the back surface and one side surface of the outdoor unit housing, a recessed portion that is recessed toward the inside of the outdoor unit is provided,
The two connection portions for connecting the outdoor unit and the said water pipe, Ri Na provided side by side in the vertical direction on the back parallel to the surface of the outdoor unit housing in該陥deaths portion fits to the recessed portion,
Pump drain tap for extracting water from the water pipe, characterized in the Rukoto such provided below the connecting portion of the back parallel to the plane of the outdoor unit housing within the recess of the outdoor unit Type water heater. 前記陥没部内における前記室外ユニット筐体の側面又は底面と平行な面に，前記室外ユニットの内部に連通する連通口が設けられてなる請求項１に記載のヒートポンプ式給湯機。 The heat pump type hot water heater according to claim 1, wherein a communication port communicating with the inside of the outdoor unit is provided in a surface parallel to a side surface or a bottom surface of the outdoor unit housing in the depressed portion. 前記陥没部内における前記室外ユニット筐体の底面と平行な面に，外部から前記室外ユニット内に配線を挿入するための配線挿入口が設けられてなる請求項１又は２に記載のヒートポンプ式給湯機。 The heat pump type water heater according to claim 1 or 2 , wherein a wiring insertion port for inserting a wiring into the outdoor unit from the outside is provided in a surface parallel to the bottom surface of the outdoor unit housing in the depressed portion. . 前記室外ユニットに，所定の排水口から水を排水するためのドレンパンが設けられてなり，
前記陥没部に，該陥没部内の水を前記ドレンパンに導く排水手段が設けられてなる請求項１〜３のいずれかに記載のヒートポンプ式給湯機。 The outdoor unit is provided with a drain pan for draining water from a predetermined drain,
The heat pump type hot water heater according to any one of claims 1 to 3 , wherein a drainage means for guiding water in the depressed portion to the drain pan is provided in the depressed portion.
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